CN85202199U - Oil shielding system of pump - Google Patents

Abstract

The utility model discloses an oil shielding system of pump, relating to components or attachments of pumps. The utility model removes an inclined connecting pipe (4) and an arc baffle board (6), and a bend pipe (11) is arranged at the upper part of a tank and is communicated with a piston cylinder. The upper part of the tank is provided with an upper baffle board (10), a lower baffle board (8) is welded on the tank body, and a feeding oil exhaust valve (2) is arranged at the upper part of the bend pipe (11). An emargination (12) and an observing valve (9) are respectively changed into an outer reinforcing structure of plug-in type assistance. The utility model has uniform force distribution, and has the advantages of long service life, high efficiency, simple structure. The stable separating surface between oil and water is stable, the effect of the oil isolation is good, ash water doesn't enter the piston cylinder, the sealing member of the piston and the piston rod has long service life, and the noise and the vibration of pumps are small and reasonable.

Description

Oil shielding system of pump

Advance type oil isolated system relate to pump zero, parts or annex.

The oil isolated system is a component part of oil isolation pump, and oily isolation tank is again oily isolated system vitals.Draw Japanese Mars pump contoured design, be mainly used in mine, metallurgical system transfer ore pulp, mud etc. and contain solid material slurry.After 78 years, oil isolation pump begins to use in fire (heat) power plant ash disposal system, is used for carrying coal ash pulp.But because the proportion of coal ash is lighter, compare with transfer ore pulp, oily isolation effect is bad, causes piston cylinder to advance ash, piston and cylinder sleeve, piston rod and stuffing box gland wearing and tearing aggravation, reduce working life, and isolating oil consumption increases simultaneously greatly, and the isolation tank structure is unreasonable, the stress distribution inequality, under the cyclic stress effect, easily produce fatigue crack, the safe operation of serious threat power plant.

The utility model has solved the problems referred to above, is primarily characterized in that:

1. cancel isolation tank inclined pipe (4) square flange (5), piston cylinder is taken over, and square flange is vertical by laterally changing into, and adds bend pipe (11) in the tank top, is communicated with piston cylinder.

2. cancel a jar arc plate washer (6).

3. isolation tank top increases plate washer (12), and lower baffle (8) changes from former sieve plate down and is welded on the tank body.

4. the oil supply exhaust is cut down (2) and is changed into bend pipe (11) top.

5. flange (10) changes plug-in type into by original surface stuck type and subsidizes the outer structure of strengthening.

6. observe and cut down (9) and change the pedestal plug-in type into by original plug-in type and subsidize the outer structure of strengthening.

Modified model oil isolated system has following advantage than prototype:

1. cancel radially that inclined pipe (4) makes tank body (1) stress distribution even, solved tank body and inclined pipe joint stress and concentrated and cause the problem that at first occurs crackle herein, improved the working life of tank body.

2. cancelled curved tailgate, the effective area of passage that has increased jar interior oil water surface is (by original 2100cm ²Increase to 2552cm ²) jar fluid velocity inside and acceleration are reduced, the interior separating surface of jar undulate quantity up and down is reduced to 8.62cm from 10.45cm, has not only reduced the drag losses at overcurrent position, and the oil-water interfaces emulsion is improved, thereby improved oily isolation effect, reduced oil consumption.

3. oil water surface is brought up to 758mm to isolation tank is communicated with the position with piston cylinder the discrepancy in elevation by original 384mm, makes buck be difficult for carrying out piston cylinder, thereby has improved the working life of piston seal and rod seal.

4. structure is simpler, reasonable, easy to process than prototype, saves raw material, reduces production costs.

5. the total efficiency of pump increases, and improves 0.09～0.79% at operation area internal ratio archetypal pump.

6. noise reduces by 0.8～3.5 decibel than archetypal pump.

7. vibrate for a short time, the maximum perpendicular amplitude is reduced to 0.03mm by the 0.043mm of archetypal pump.

The Figure of description explanation

Fig. 1, modified model oil isolated system

1. tank body

3. upper sieve plate

7. play sieve plate

8. lower baffle

9. observe and cut down

1.0. flange

1.1. bend pipe

1.2. last plate washer

Fig. 2, oily isolated system prototype

1. tank body

2. the oil supply exhaust is cut down

3. upper sieve plate

4. inclined pipe

5. square flange

6. curved tailgate

7. play sieve plate

8. lower baffle

9. observe and cut down

1.0. flange

Embodiment

Oily isolated system with 2DYH-108/4C type oil isolation pump is an example:

With the piston cylinder square flange by side direction change into up to.

2. cancel isolation tank inclined pipe, square flange and curved tailgate.

3. change isolation tank upper flange external diameter into φ 300 by φ 200, internal diameter changes φ 140 into by 65.

4. change the end socket aperture into φ 300 by φ 140.

5. increasing diameter is the last plate washer of φ 140, is welded on the tank body with support plate.

6. change lower baffle diameter phi 160 into φ 140, and change shape into ichthyoid, be welded on the tank body with support plate.

7. it is thick to cut down pedestal weld heat-affected zone shop weldering 3-5mm in flange and observation.

8. increase internal diameter φ 140, external diameter φ 200,10 ° 17 of axis tilt ₉' the threeway bend pipe be communicated with isolation tank and piston cylinder, the oil supply exhaust is cut down is contained in bend pipe top.

Experimental results show that: modified model oil isolated system is rational in infrastructure, simple, and the isolation tank body stress is evenly distributed, and has improved the working life of tank body.Jar fluid velocity inside and acceleration are little, and oil water surface is stable, has improved oily isolation effect, reduce oil consumption.Buck is difficult for entering piston cylinder, has improved the working life of piston seal and rod seal, and the efficient of pump improves, and vibration, noise reduce.

Claims (4)

1, oily isolated system is an oil isolation pump important composition part, the oil isolated system comprises that tank body, second shape pipe, piston cylinder, oil supply exhaust cut down, tank body＜1 wherein〉comprise sieve plate＜7 lower baffle＜8 cylindrical shell, end socket, flange＜10 wiring terminal, observe cut down＜9, and major character of the present utility model is to cancel inclined pipe＜4 〉, square flange＜5 〉, cancellation jar arc plate washer＜6 〉, jar inner increasing goes up plate washer＜12 〉, bottom plate washer＜8〉change from former sieve plate down and to be welded on the tank body.

2, according to claim 1, it is characterized by and install bend pipe (11) additional at oily isolation tank top and be communicated with piston cylinder, the oil supply exhaust is cut down (8) and is retrofitted in bend pipe top.

3, according to claim (1), flange (10) changes plug-in type into by original surface stuck type, subsidizes the outer structure of strengthening.

4, according to claim 1, observe and to cut down (9) and change the pedestal plug-in type into by original plug-in type and subsidize the outer structure of strengthening.